Perhaps you should try some spelling variations:
22private international » private international, privacy international, approximate international
iec international » public international
2c comparative » abc comparative, dic comparative, etc comparative
c comparative » qrac comparative
26 foreign » 2 foreign, 6 foreign, 23 foreign

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "%22private international law%iec international %26 foreign law%((2c comparative) OR (c comparative)) law%22".
• Adding a wildcard symbol may retrieve word variants: %22private international law%iec international %26 foreign law%((2c comparative) OR (c comparative)) law%22*.